Home > Product range > Medium Voltage Electricity Medium Voltage Electricity Electricity and electrical technology lie at the heart of the Cahors Group. From MV/LV transformers to the end user, the Group provides global solutions for the connection, distribution and metering of electricity networks. MV Ring Main Units - GRANY product range Distribution transformers - Oil-immersed transformers - Dry transformers - Transformers with a protection-disconnection function: TPC Compact substations - Solutions for underground rural networks - Temporary power supply HV / MV substations - Neutral earthing equipment - Auxiliary supply equipment Network protection and supervision - Fault detectors MV ring main units Distribution transformers Compact substations HV / MV substation equipment Network protection and supervision The advantages of introducing a protection and disconnection function in transformers